Granted Patent
Utility
US 6,533,035 · App. 09/841,542
Method and apparatus for stimulating well production
Inventors:
James Troutt, Millard Lewis, Robert A. Ereth
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Apr 24, 2001
Inventors
James Troutt
Millard Lewis
Robert A. Ereth
Assignee (at issue)
LAYNE CHRISTENSEN COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.